Umbilical CordFetal BloodSpinal CordUmbilical VeinsUmbilical ArteriesSpinal Cord InjuriesCord Blood Stem Cell TransplantationInfant, NewbornPregnancyBlood BanksHernia, UmbilicalAntigens, CD34Urachal CystHematopoietic Stem CellsMaternal-Fetal ExchangeCells, CulturedGestational AgeWharton JellyMesenchymal Stromal CellsUltrasonography, PrenatalHuman Umbilical Vein Endothelial CellsSpinal Cord DiseasesUmbilicusPlacentaFetusSpinal Cord CompressionCell DifferentiationHematopoietic Stem Cell TransplantationSpermatic CordCell SeparationCell Culture TechniquesFetal HypoxiaSpinal Cord NeoplasmsStem CellsNuchal CordFlow CytometryEndothelium, VascularSpinal Cord IschemiaAntigens, CDBlood PreservationMice, SCIDEndothelial CellsColony-Forming Units AssayInfant, Newborn, DiseasesTime FactorsBirth WeightHistocompatibility TestingInfant, PrematureImmunophenotypingGraft vs Host DiseaseAmniotic FluidDelivery, ObstetricMaternal ExposureFetal DiseasesPregnancy OutcomeCesarean SectionMice, Inbred NODApgar ScoreAntigens, CD38Transplantation ConditioningFetal Growth RetardationCell LineageMeconiumCoculture TechniquesBone Marrow CellsUrachusHematologic NeoplasmsADP-ribosyl CyclaseCord FactorsPregnancy ComplicationsLeukocytes, MononuclearCell ProliferationConstrictionPregnancy Trimester, ThirdTransplantation, HomologousHematopoiesisBlood Cell CountUnrelated DonorsUltrasonography, DopplerBlood CellsGraft SurvivalHeart Rate, FetalPregnancy Trimester, FirstParaplegiaFetal Stem CellsAsphyxiaDonor SelectionVocal CordsPlacental CirculationFetal DistressInfant, Small for Gestational AgeCryopreservationStem Cell FactorChorioamnionitisTransplantation ChimeraNAD+ NucleosidasePlacenta DiseasesTransplantation, HeterologousStem Cell TransplantationMesenchymal Stem Cell Transplantation